OREKIT is a free low level space dynamics library written in Java. Please visit our Gitlab instance for issues and contributions: https://gitlab.orekit.org
Gauss-Radau Small-body Simulator
Some Orbital Mechanics Matlab Codes. Heavily based on the "Orbital Mechanics for Engineers, Howard D. Curtis" book.
A Rust package for the SGP-4 orbital propagator.
Versatile astrodynamics / space mission simulator. n-body orbital mechanics, maneuvers, perturbations and more.
OrbMod (Orbit Modeling) - tools for numerical modeling of orbits: propagation and fitting to observations.
Fast, accessible, accurate orbit propagator for spacecraft
High Precision Lunar Orbit Propagator
Satellite Orbit Propagation as a Service. gRPC API for U.S. Space Force (USSF) SGP4 / SGP4‑XP propagator. Catalog‑scale satellite processing, ephemeris generation, and built‑in mem. management. Written in Go
Codework for Orbit Propagation and Line-Of-Site Visibility Analysis using TLEs
Outfit is a Rust library for orbit determination and propagation of small Solar System bodies, with support for MPC, ADES, Parquet, Gauss IOD, and JPL ephemerides.
The MATLAB model here presented performs trajectory propagations based on the Constant Density Polyhedron algorithm. With this model, it is possible to compute trajectories in the proximity of astronomical bodies such as asteroids or comets. The algorithm also allows to compute ballistic trajectories.
Intuitive object-oriented library that simplifies orbital propagation for space missions.
Easy-to-use minor planet orbit propagator with animated orbits
GNC toolkit with python
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